Sewing machine



Nov. 24, 1931. B. 'r. LEVEQUE 1,833,366

SEWING MACHINE Filed Jan. 15, 1930 2 Sheets-Sheet l Nov. 24, 1931. B. T.LEVEQUE SEWING MACHINE File d Jan. 15. 19:0 2 Sheets-Sheet 2 II II.-

Patented Nov. 24, 1931 UNITED i BERNARD '1'. LEVEQUE, 0F- mam,ivin'ssacnusjnrrs, Assieivon To UNITED. SHOE NE ERsnY, a CORPORATION OFNEW proper timing of these parts. 4

from operative position to prevent interferenceof the shuttle with theneedlea view in side elevation'oi the supporting con- CHINERYGOBPOBATIQN, 10F PATERSON,

JERSEY I SEWI G macmnn Application filed January 15, .1930. Serial .No.420,876.

The invention relates to sewingmachines and has for its object theprovision of aTsafety device adaptedfornse in a machine employing ashuttle which operates in the pathof movement of the needle to preventthe shuttle from coming into interference-with the needle in the eventof an interruption of the With this object in view,- one feature of= theinvention consists in g the provision: in a sewing machine employing ashuttle which operates in the path l of movement ofthe relatively out ofoperative relationship. 5 In its preferred form,'this feature oi theinvention contemplates the provision ofmechanism which is renderedoperative upon interference with the timing "of the shuttle; to withdrawthe shuttle casingiand the shuttle The several features of the'invention con sist also in the devicesfcombinations and arrangement ofparts hereinafter described and" claimed which together with-theadvantages to be obtained thereby'will lee-readily understood by oneskilled in the art from the following description taken in connectionwith the accompanying drawings of which Fig. 1 is a View in right sideelevation of a portion of the head of a s-hoe-sewing;

machine illustrating particularly the. shut tle and its actuatingmechanism; Fig.2 is a view similar to Fig. l'with the shuttle drawn backinto inoperative position out of line with the-needle; Fig. 3 is adetail sectional I nections for the slide on which the shuttle ismounted; and Fig- 4 isa sectional-view taken onthe line 4: of'Fig. 2. 1

' The invention is herein disclosed asembodied in an outsole shoe sewingmachine of the McKay type employing a straighthook needle, and a shuttlewhich acts in timedre lation with the needle, takingjthe loop zdi rectlyfrom the needle hookg-LA machine of this type is ordinarily provided:with means for disconnecting the shuttle automatically i" from itsdriving mechanism Whenever the "shuttle becomes jammed for any reason,and a 1 thus to prevent possible. breakage of parts. Inasmuch as theshuttle with the construetion herein disclosed operates directly inthe'rneedle path, this interruptionof the timing of the shuttle with relationto the needle I maycause the needle on'itsdownward stroke 'e tobe-brought into interference'with the sh'ut- I "tlehoo k withconsequentdamageito the parts.

In order to'obviate,thisfdanger; the shuttle housing in thepresentc-onstruction is slidably mounted on the machine frame, and rmechanism is providedwhich act s" automatically uponinterruption-of thetimingofthel shuttle with" relation ,to the needle to with drawthe-shuttle casing and the shuttle' from ings, theneedle' is indicatedat 2 secured-to the lower end of a needlebar 4, andtheshuttlje-at 6',provided withahook-"8, 1nounted in a' cas operative position out of linewith the"de scending needle." g I Referring m'ore specifically to the?draw-'-" ing1-10 whichis' in turn secured to a bracket 12. The:shuttle'is of the oscillatory type" is driven in-the usual manner by'means, -of,a-lever arm 14 secured to the forwardend as v of a "rockshaft 16 which is continuously through universal joints and a'link 'l8with an arm '20 secured to oneend of a'sleeve22 which is mOuntedtoturnon the stud Z4 .rigidly' secured on" the bracket "12; The

sleeve is also provided with a downwardly extending arm 26 which carriesagear segment oscillated during theoperation of'th'e Ina-O chine intimed relation to the needle. I The" lever arm' 14 is connected at"itstree end 28 meshing with a pinion 30 which is loosely sleeved on thedriving shaft 32 of the shuttle.-

The pinion 30 is given a continuous oscillar tory movement through theseconnectionsfrom the lever arm l lduring the continued operation ofthemachine. The pinion 30 is normally held inldrlving relationto theshuttle by means of aclutch'- mechanism which acts automatically whenexcessive strain is placed on this mechanism through jammingfot theshuttle .tofdisco'nnec t the shuttle from the pinion 30. IThismechanism-comprises as1eeve34 keyedto r0 I tate with the shuttle drivingshaft 32 and I "jammed, the increased strain on the clutch provided witha clutch face 36 which is adapted to engage with a corresponding clutchsurface 38 formed on thepinion- 30.

secured to the end of the shuttle driving shaft' 32. If the shuttle forany reason'jbecomes surfaces 36 and 38 will cause these parts to moverelatively to each other, forcing the sleeve 34 back against thepressure of the spring 40 to disconnect the driving shaft 32 from thecontinuously oscillating pinion 30. i In order to permitthe shuttle tobe moved lout of line with the descending needle .upon interruptionofthe timing of the shuttle, as

V j 20 above described, the shuttle housing or casing I 10 and thebracket 12 are secured to the for- .ward end of .a -slide 44 which isprovided ;-with a raised section or rib 45 adapted to fit intoafcorresponding groove or guidewa 46 formed on a fixed-portion of themac ine -frame The slide 44 is held-in position with the 111.145 vengaging the guideway 46;to determinerthe direction of movementfof the,slideby means of'a cover memberor-plate 47 which is rigidlyclamped totwo bolts 48. .;These bolts. extend upwardly through 'c'or're- Vaspondingislots .50 in'the slide 44 and. are sjcrewr-threaded into the,machine frame.

7 Mechanism for actuating the slide 44'to move. .35.

the shuttle out of linewith the descending needle upon interruption ofthe timing of the whichis secured at one end to a pin 54 fixed conthemachine frame, andat its other end to v ;a pin 56 secured to the slide44. The slide 44 and the shuttle are normally held in operatingposition" against-the pressure of the. spring 52 by means of a latchlever 58 which .is pivotally secured atj60 to the fixed cover ,plate4'Zof the guideway and provided with V a notchedportion 62 whichisadapted to en- ,gage with a corresponding abutment 64 -011 1 the slide44. A downwardlyextending arm of the latch lever 58 is provided with aroll 1 .66which is adapted to engage with-'aflan e 68 on the clutchsleeve '34 keyed to the shuttle latch'lever 58 about its pivot torelease the is claimed is: v V "'1.;In azsewlngmachine, the combinationslide 44 which is then withdrawn out of oper-.

ating position by the action of the compression spring 52. Theiinventionhaving been witha needle, of a shuttle moving in timed relation to theneedle in the needle path, and

of the path of the needle. 7 1

6. In a sewing machine,--thecombination, 12c

described, what '1 relation to the needle in the needle path, a supportfor the shuttle, and means rendered operative upon interference with thetiming of the shuttle to .move the support to carry the shuttle. out ofthe needle path;

'76 3. In a sewing machine, the. wcombinatlon 1 with a needle, of ashuttle, a support on which the shuttle is mountedto operate, mechanismfor driving the shuttle in timed relationto the needle, a slip jointbetween the shuttle and-'its driving mechanism, and means renderedoperative upon the-slipping of said joint. for actuating the support-(tomov th shuttle away fromthe needle. Y

'4. In sewing machine, thecombination g with a needle, of a shuttle, asupport for the shuttle, a: shaft rotatably mounted inc-the support. todrive the shuttle, mechanism for driving the shuttle in timedrelationjtothe needle, .aslip joint between the shuttle-and the drivingmechanism -comprisinga sleeve" .keyed to slidegon the shaft, spring'means tending to move the shuttle out-of. operative 7 position,alatch;tendingnormally to hold the support andshuttle in operative;position, and connections rendered 1operativeaby the?" movement of thesaid sleeve to break the slip 7 joint, todisengage the fsaidlatch. 1 I

5. In a sewing machine, the combination witha needle, of a shuttle, asupport for the ,.shuttle, 'a s'huttle driver comprising ;a shaft Ishuttle comprises a compression-spring 52.

mounted to drive the shuttle, mechanism for actuatingthe drivertodrive'the'shuttle-in timed 'relation to the needle, aslip joint betweenthe shutt'leandfthesaid actuating mechanism comprising a-sleeve keyed toslide 'fon theshaft, and a cooperating gear member ment with the gearmember to prevent slipping, a flang'e'formed on the sleeve,*spriingmeans tending to move the support and shuttle outfofoperative-position,and a-retaining r g latcharrangedto be actuated by contact, with- 0' 1driving shaft 32. When the clutch sleeve 34 "the flange upon shppmb ofthe 101m and 90D is moved; against the pressure of the spring 40 todisengage the shuttle from its driving; mechanismas above described, theflange68, will engage with the roll 66 and turn the sequent. axialmovement of the sleeve to p'ermit movement of the support and shuttleout with a needle, of 'a shuttle, a supportv forthe shuttle comprising aslide adapted to move the shuttle into and out of operative-position,

a' guidewayfor the said slide comprising. a

track, a cover plate torhold the slide in 0011-, 1 25 tact with thetrack,iand bolts to which. the cover plate is clamped passing'throughslotted portions of theslide and anchored in the machine frame, springmeans tendin-g to move the slide and shuttle out. of operative po'sition, a latch adapted normally to maintain the slide andshuttle inoperative position against the pressure of said spring means, mechanismfor driving the shuttle in timed relation to the needle, a slip jointbetween the shuttle and the driving mechanism, and means renderedoperative upon slipping of the joint to disengage the latch and permitthe slide and shuttle to be moved out of 10 operative position.

I 7 In a sewing machine, the combination with a needle, of a shuttle, asupport for the shuttle comprising a slide, spring means tending tomovethe slide and shuttle out of operative position, a latch member adaptednormally to hold the slide and shuttle in operative position against thepressure of the spring, mechanism for driving the shuttle in timedrelation to the needle comprising a 3g shaft for driving the shuttle, agear member loosely mounted on the shaft and actuated in timed relationto the needle, a sleeve keyed to slide on the shaft and adapted tocooperate with the said gearmem'ber to provideat. a slip joint, springmeans for holding the sleeve in contact with the said gear member,

and a flange formed on the sleeve adapted upon slipping of the joint andconsequent axial movement of the sleeve to trip the latch so member andpermit the movement of the shuttle out of operative position.

In testimony whereof I have signed my name to this specificationsBERNARD: T. LEVEQUE.

